Heat therapy pad



FIG. 1 is a top plan view of a heat therapy pad showing our new design;

FIG. 2 is a top and side perspective view thereof shown in an expanded position;

FIG. 3 is a bottom and side perspective view thereof shown in an expanded position; and,

FIG. 4 is a top and side perspective view thereof, shown in a compressed position. 

The ornamental design for a heat therapy pad, as shown and described. 